Means for constructing concrete surfaces



Aug. 7, 192s.y 1,619,535

H. LYKKEN MEANS FOR CONSTRUCTING CONCRETESURFAGSA Filed March s, 1925 2 SeetsLsheet 1 www l l 0 o Q Q A 9 E l 1,679,535 H. G. LYKKEN I MEANS FOR CONSTRUCTING CONCRETE SURFAGES Aug. 7, l 928.

Filed March 5, 1923 2 Sheets-Sheet 2 2 2, Figi. rig.

Patented Aug. 7, i928.

uNiTEns Afr-Es -i lairiiufrA o'rfificegl HENRYy e. ,LYKKELL ,orA MrNi-TEAPOLIS, MINNESOTA;

MEANS' non coNs'rnUc'rINe CONCRETE sUnnAciis. v

Application ined-March 5, 1923; -seriaiNe 622,718.

ing may be'laid quickly andr accurately toa predetermined form; to provide apparatus for the-efficient and accurate laying and smoothing of concrete 'and other surfaces; to provide, in in apparatus of the character referred to, means for varying the same so as to produce surfaces of predetermined see lected forms; to provide adjustablejmeans for vaiying the form of this apparatus so that the cross-sectional sha-pe of the surface lbeing laid may bevaried as desired; to provnext adjacent arm by a suitable.adjusting vide adjustable means for varying the thick-y ness of the surfacing material being spreadv upon the surface beingcovered; and such further objects, advantages and capabilities.

' 1,1, lllSVeI'Seiy, maybe `adjusted as desired.

aswill later more fully appear.

My invention further resides inthe com!A vbination, construction and arrangement of..

partsillustrated in the accompanying drawing is now i in accordance with'this invention, I desire the same to vbe understood as illustrative only and not as-limitingsaid invention.

' fIn the drawings annexed hereto and forming a-part'hereof, Fig. l`is plan view of'. a construction various features of my-inveiition. Fig. 2 is a fragmentary Vlongitudinal section substan-Y` tiallyy along the plane indicated by the line 8 tical section substantially ,along the p lane indicated by the liiie'3-3, Fig. 2. Fig/1 is a fragmentary front yelevation as indicated, by ltheline 4,4, Fig.,2. Fig., 5 is a frag-.

mentary cross-sectional elevation whose pos sition is indicated by the line 'V5-5, Fig. 2. Fig. 6 is a reduced plan viewshowing the., apparatus and .means for propelling-the saine .alongv a surface L,upon Awhich concretey is being laid.

Referring more in detailto the annexed drawings, numeral 1 `designates a .plurality` of elongated `flat y members having their edges turned upto'form flanges` which abut* corresponding Vflanges `of adjacent members. As shown in Figr, these members .l are 'straight` throughout. lthe major portion of their length lhaving a very. ysmall upturn atVY and, while I have shown; therein what considered 4a preferred constructionv a 5 fragmentary embodying the is a fragmentary verthe/rear end as shown atl 2, a longer vupturn at the forwardv end as shown at .3. rlhe flangesl ofthe members l -are perforated for the reception of tie-rods 5, by

means of which the members 1 are held *closely adjacent eachother so that the lower Yface of the apparatus will bequitesmooth i aiidn'ill lnot when drawn over plastic concrete leave appreciable lines; thereon.' 1 Se.-

cured to each. kof the elongatedxinembers l, neargtheir forward and rearward ends,` are flanges to stii'l'en the saine and prevent them from becoming distorted under lateral pressure. Eacharmv G is connected with its means? such asa turn-buckle arrangement wnereby the angle vbetween thearms 6, and

consequently the angle b etweentlie members y that water can be drained from .the center of `roadway toward the sides thereof. LIt' is of course understoodgtliat.this apparatus may be used to construct fiat concrete surfaces-,as well a'sgtliose 'which Vare crowned.

'gljlie'present illustration shows this apparatus beingv used for the formation of a .flat road-'- way and it will benoted thatside members `areused to prevent lateralspreading of `the fconcrete mixture, but the present apparatus.

doesnot rest on and is not supported by the l 1 side members, ,the sole function of rwhich is Ato limit the lateral spread of the concrete. Screed ymembers, comprising Y U-shaped bars rv8. andv transverse hoe-like members `9 arek mounteclby means of members 10 adjacent `.the forward ends yof ii'ieniibers l, and may be adjusted by.v means ,of` bolts 1l which may beecrewed to the brackets l2 tova'ry the ieiglit of the members '9, varyingthe adjustment of these .scieedinembersto vary y thefaniount of plasticmaterial whichr is permittedto remain in fronty oftlie smoothing andy packing elements .l and will therefore yvary the tliiclnessoffthe concrete or like material laid. By reference to Fig. vif it :will be seeny that themeinbers 9 overlap `at their edges so that there will bea substantially ysmooth surface prepared for the menibers 1.1to travel over. o

ioo

rpaving apparatus which shaftcarries upon its opposite ends a pair of drums, around which are wound cables whose ends are firmly anchored alongside. the pavement.

As the hand wheel is turned the shaft is rotated and the cables pass over the drums in such a. manner as to cause advancement of the apparatus, as will readily be understood.

'This mechanism is merely typical of any mechanism which may be used to cause the apparatus to move forwardly andwhich may include an engine resting yupon the apparatus and causing the same to be propelled. It

might also include a single engine fixed in the roadway ahead of the apparatus'or a pair of engines located at the sides f the roadway7 or the like. Various other means for propelling` the apparatus will suggest themselves yto one skilled in the art without their being suggested herein. Grdinarily the weight ofthe forms will be sufficient to mold, compact and knead the concrete to a uniform consistency and true contour, while the forward movement floats and works the surface to a uniform condition. However, if it is found that the weight is insufficient, in any particular case, it will be an leasy matter to place additional weight upon the top of the form, thereby securing all the vweight essentialfor properly shaping and conditioning the concrete or the like.

Due tothe length of the form and the means for gradually elevating and depressing the same at will, and due to the fact that the position of the form is unaffected by any settlement of the side curb, dips or waves, which are common in connection with prior `methods of construction, areobviated.

With the present apparatus and method, all the work of screeding or striking off the concrete is accomplished in the same operation as that of smoothing the surface, i. e., by moving the sliding form forwardly on the concrete, the adjustable screed striking off the concrete to the exact contour desired. The adjustability of the screeds permits a gradual lifting or depression of the surface to produce the desired contour of the roadway. It is also within the purview of this invention that the machine may be provided with vibrating means to produce a vibratory or tamping effect. It is not the in` tention to limitthe use of this machine to the laying of a mixture of Portland cement, sand, and coarse mineral aggregates, but the same maybe used for the laying of any plastic material such as a mixture of tar,`

asphalt and minera-l aggregate, and other similar materials.

The apparatus of the present invention can also be lused in forming curved concrete surfaces such as turns in roadways, inthe construction of which theside elementsrare set flush with the top of thepavement, and, as

the apparatus moves forwardly, thel screed members are elevated progressively from the inside of the yturn to the outside thereof to form a bank. As the apparatus starts to leave the tangent, it is gradually flattened out so that on the curve the slope will all be in one` direction, i. e., toward the inside of the curve. On leaving the curve and starting on a new tangent, the form is gradually again brought back tothe proper crown so that drainage will 'betoward both sides ofV the roadway.

lIt is of course understood that the specific description of Astructure and methods set forth above may be departed from without departing from the spirit of my invention as set forth in this specification and the appended claims. i

Having now described my invention, I claim l. structure ofthe character described comprising a composite surface former having a plurality of elongated narrow elements, flat upon their under side and having their forward ends bent upwardly, means for holding the elements in contact laterally and means pivotally adjustableV kforwardly bent portions for spreading plastic material in front of the elongated members, and means for adustingV the spreading means to vary the depth of material.

3. A paving apparatus comprising a plurality of elongated .surfacing members arranged parallel to the direction of movement of the apparatus, means for varying the angular relation of each member and its adjacent member at several longitudinal portions of said members, screeding lmeans in front of and supported by said surfacing members comprising a plurality of adjustable screeding portions, and means for yvarying the angular relation between said portions and between said portions and the surfacing members, the entire apparatus being supported solely on the material screeded and-surfaced by it. 1

4:. A paving apparatus comprising ya surfacing member consisting of la plurality of flat faced narrow elements paralleling the direction of movement ofthe apparatus, means for connecting said elements to form their faces yinto a smooth composite surface,

a screed spaced well in front of said member, means for adJustably supporting the screed oii said member, and means for Varyv ing the dihedral angles between said faces,

the last .said means being well spaced from the connecting means to cooperate therewith y to hold the surfacing member rigidly in a pre-adjusted shape.

5. In a paving apparatus, a surfacing member comprising a plurality of longitudinal elements having flat faces, means for connecting said elements, and. means spaced apart from the connecting means foi Vary-` ed entirely by the plastic material, means for varying the contour of the surfacing means,

sci'eeding' meansr in front of the lsurfacing means and connected therewith, and means y for supporting the scieeding lmeans entirely on the plasticmaterial, the last said means'` being further adapted to Vary the contour of the screeding means.

7. An apparatus for surfacing plasticl mamy' naine to this specification.

lterial comprising a surfacing member sup-rv ported entirely onthe material 'being sui facedv by it, meansforl Varying the contour of said member, .screedingineans' supported on said member, and means'for Varying the contour of the screeding` means, the two Varying means being cooperableto cause A the screedmgfmeans to be varied as the contour of the surfacing member is varied. v

8. A paying apparatus comprising a'sui'- facing ymember *formedl of agplurality of llong, narrow,l flat faced elements .havingup-v standing lateral flanges, means forconn`ect-- fing saidflanges together to form a compositesn'jiootli surface on the surfacing member, upstanding projections 'on ysaid element, adjustable means' for connecting said pro-v jections for varying' the contour of the surfacing member and for rigidly locking the surfacing member ina plurality of shapes, the surfacing member being adapted to be supported entirely on and by the plasticma l i teiial-Vwhich it surfaces, screediiig means dis# posed considerably in advance of the surfacingmember, and means for adjustablyy supporting the sereeding means on the surfacing meinber; y

In Witness whereof, I hereuntosubscribe HENRY e. LYKKEN'. l 

